They're not professional. I don't like them I still think that the firsts are the best

Same for me. I like the color on yf15g, but the logo himself is not professional. Good luck

I think 15a - 15c have a unique touch and play with the resemblance to comic language of the word "Yii". Definitely something that gets remembered. It would outstand of many other framework logos - just like Yii itself.

So: I like those bubbles and the missing "professionality" can also be seen as playful contrast to Yii.

the letter 'Y' that involves the globe represents the programmers' union that make 'Yii' to be "the best php framework" of the present time in the world. it also represents the item: extensible and the two letters 'ii' the items easy, efficient. it is a dynamic logo with soft curves and with appearance of speed. there is no equal. the colors were maintained of the current logo.

it's easy to remind! look the logo.... and... close your eyes ... can open the eyes . did see? its the new Yii Framework!